Straining-pad for journal-bearings.



L Ne. 629,71132i Patentd Aug;,|, 1899.

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STBMNING PAD FDR JOURNAL BEBNGS.

(Application led'Feb. 19, 1898.)

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. UNITED STATES i YI )A'IENT OFFICE- "WILLIAM P. BENDING, 'OF CLEVELAND, OHIO, AS-SIGNOR OF ONE-HALF TO .lOl-IN C. GOODRICH AND EDWARD I. STIMSON, OF DETROIT, MICHIGAN;

STRAININGPAD FOR JOURNAL-BEARINGS.

` r.'SIEGIFIGATION forming part of Letters Patent No. 629,762, dated August 1, 1899.

Application tiled February 19, 1893. Serial No. 670,919. (No model.)

To all whom it may con/corni Beit known that I, WILLIAM P. BENDING, a citizen of the United States, residing at Cleveland, county of Cuyahoga, State of Ohio, have invented a certain new and useful Improvement in Straining-Pads for Journal-Bearings; and I declare the following to be a full, clear,

and exact description of the invention, such v 'tive a portion of a journal and a portion of as will enable others skilled in the art to which it pertains to make and use the same, reference beinghad to the acccmpanyingdrawn gs,

which form a part of this specification. Y

This invention relates to straining-pads for'v lubricants, and has for its object an improved straining-pad to be employed in the oil-receptacle above the journal-bearings of wheeljournals. Y j

Usually there is above the journal of driving-wheels of locomotives, in the -frame in which the brass is set, a cavity that is commonly filled with waste and the waste saturated with oil. The oil, escaping from the Waste, runs through holes in the bottom of the cavity and through holes in t-he brasses to the journal; but this is both wasteful vof oil and ,is not sufficiently perfect in the straining qualities of the mass' of waste,V and the dust and dirt which gather inthe waste are in' the course of ti me carried by the oil to the journal and serve to cut out and injure the journal. In place of the waste I employ a pad of felt that extends over the entire bottom of the cavity, fitting closely against the side walls of it, but which is arranged to be lifted at all times from the bottom wall, so that there is at the mouth of the oil-conducting passages nothing to produce capillary attraction and prevent free ingress of oil into the passages after the oil has once passed through the pad. The felt of which the pad is made is somewhat pervious to oil in any direction, but a strip of it cut ofa width of the thickness of the pad is more pervious in the direction that would normally be lengthwise or crosswise of the fabric than it is in the direction directly through the fabric, and in order to utilize this feature I make through the fabric of the felt, which is out from a piece so that it normally takes that position by which it will be least pervious to oil, several holes which are filled with pieces of the felt arranged so that the the journal-bearing, partly broken away. The cavity for the reception of the pad is shown, and the holes leading from the cavity through the bearing to the journal are shown. Fig. 2 is a perspective of' the pad. Fig. 3 is a section along the broken dotted line so x of Fig. 2. Fig. 4 is a perspective of the clip c.

A indicates the journal; C, the brass block above the journal; B, the bearing inwhich the brass block is held; D, the cavity in the bearing B, in which is placed the pad a.. The pad a is made of felt and is cut to tit closely in the cavity D. longer than the cavity, so that when the pad is crowded into the cavity it is bent slightly,

so as to buckle upward at the middle, and isV nevertheless long enough to i extend completely from end to end of the cavity. On the under side Aof it is' anarrow strap b of liexible material, the ends of which are secured to the ends of the felt pad, preferably by metallic clips c o. The strap b serves to hold the pad up from the bottom of the cavity,iso that the oil-conducting holes 7i, are at all times unobstructed.

Through the pad at 0r near thevmiddle It is, however, cut slightly' cross-line are two or more holes,through which j are inserted plugs of felting d d, and these plugs are cut so that what may be termed the grain7 of the plug part is vertical, whereas the grain of the pad part may run either lengthwise of it or across it from side to side, but'does not run through it from face to face. The plugs are preferably secured in place by a stitching ot thread or cord e. The plugs d, cut with the grain, as above described, are much more permeable to the oil than the main part of the pad, and the upper ends of them extend up into the mass of the oil, so that there is what may be termed a gathering surface to each plug, and the oil will pass through the plugs and drop from their lower IOO ends onto the surface of the cavity beneath them.

The strap h extends from end to end of the pad, is considerably narrower than the pad, and always holds the central part of the pad away from the bottom of the cavity, so that Whatever oil passes through the strainingpad is free at once to run into the oil-passages and to the journal.

What I claim is- 1. A straining-pad for journal-bearings made of felt and provided with holes and plugs of felt arranged in said holes and out so that the grain of the feltin the plug is at right angles to the main body of the pad, substantially as described.

2. A straining-pad for journal-bearings having in combination a pad of felt out to conform to the shape of the oil-receptacle, a strap arranged to support the pad away from the bottom of the oil-receptacle and means for securing the strap to the pad, substan# tially as described.

3. In combination with a felt pad provided with holes plugs of felt arranged in said holes with the grain of the felt of said plugs at right angles to the body of the pad, a strap held to the pad and arranged to raise the plugged part of the pad away from the bottom y of the chamber, substantially as described. 

